Add wxUSE_MARKUP and wrap SetLabelMarkup() in it.

Make it possible to disable all the new markup-related code by setting
wxUSE_MARKUP to 0 in setup.h or using configure --disable-markup option.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67062 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/ctrlcmn.cpp

@@ -236,6 +236,8 @@ wxControlBase::GetCompositeControlsDefaultAttributes(wxWindowVariant WXUNUSED(va
 // wxControl markup support
 // ----------------------------------------------------------------------------
 
+#if wxUSE_MARKUP
+
 /* static */
 wxString wxControlBase::RemoveMarkup(const wxString& markup)
 {
@@ -253,6 +255,8 @@ bool wxControlBase::DoSetLabelMarkup(const wxString& markup)
     return true;
 }
 
+#endif // wxUSE_MARKUP
+
 // ----------------------------------------------------------------------------
 // wxControlBase - ellipsization code
 // ----------------------------------------------------------------------------